As Ms. Foss described, parimutuel betting is a form of pool betting. While I would defer to her on the specifics of the exact operation of parimutuel betting, it is essentially a form of pool betting. All interested bettors on the outcome of a horse race pool their bets together. A levy is taken out of that pool for the operation of the CPMA and to help pay for the horse industry in general, including the race operators. The remaining money, depending on the outcome of the race and which horse was bet on, is then divided up between them. That is the pool-based system.
The difference between that and single-event sports betting is that...essentially there is no difference. Single-event sports betting is legal in Canada in one form, and that is parimutuel betting, because ultimately this parimutuel betting system that's in place, which is regulated by the CPMA, is a form of betting on the outcome of a single sporting event.
While Bill C-218 seeks to decriminalize single-event sports betting, it does so when we're talking about provincial and territorial powers. The bill would propose to decriminalize single-event sports betting, including betting products and games of chance, however they are set up by the provinces and territories within their structure of lottery schemes.
To quickly sum up, parimutuel betting—as it's constructed under the CPMA currently—is one form of single-event sports betting, but there are no other legal forms of single-event sports betting today.